oracle dg主备切换 更换ip,【DG】主备切换
一:DG之主备切换(主切备、备切主)1)主切备:SYS@ORA11GR2>selectdatabase_role,switchover_status from v$database;DATABASE_ROLESWITCHOVER_STATUS---------------- --------------------PRIMARYSESSIONS ACTIVESYS@ORA11GR2>a...